Club Atlético Unión (Torneo Apertura): every transfer in and out, fees paid and earned, squad market value, €8m spent and €30m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-02-06 | Lionel Verde | Unión Santa Fe | FC Baniyas | Loan |
| 2026-01-27 | Lucas Menossi | Belgrano | Unión Santa Fe | Free |
| 2026-01-22 | Brahian Cuello | Delfín SC | Unión Santa Fe | Free |
| 2026-01-21 | Lucas Gamba | Unión Santa Fe | Barracas C. | Free |
| 2026-01-14 | Matías Mansilla | Estudiantes LP | Unión Santa Fe | Loan |
| 2026-01-14 | Junior Marabel | Unión Santa Fe | Sarmiento Junin | Loan |
| 2026-01-14 | Gastón Arturia | Unión Santa Fe | Sarmiento Junin | Loan |
| 2026-01-14 | Diego Díaz | Sp. Las Parejas | Unión Santa Fe | €125k |
| 2026-01-01 | Santiago Grella | Unión II | Unión Santa Fe | — |
| 2026-01-01 | Misael Aguirre | Unión II | Unión Santa Fe | — |
| 2025-08-01 | Federico Gomes Gerth | Académico Viseu | Unión Santa Fe | Free |
| 2025-07-30 | Lionel Verde | Unión Santa Fe | CSKA Moscow | Loan |
| 2025-07-24 | Nicolás Palavecino | Defensa | Unión Santa Fe | Loan |
| 2025-07-24 | Franco Pardo | Unión Santa Fe | Racing Club | €640k |
| 2025-07-24 | Augusto Solari | Rosario Central | Unión Santa Fe | Free |
| 2025-07-22 | Maizon Rodríguez | Juventud | Unión Santa Fe | €724k |
| 2025-07-21 | Tomás Durso | Atl. Tucumán | Unión Santa Fe | Loan |
| 2025-07-11 | Emiliano Álvarez | CA Cerro | Unión Santa Fe | Free |
| 2025-07-09 | Ezequiel Ham | Unión Santa Fe | Atlético-GO | Free |
| 2025-07-06 | Thiago Cardozo | Unión Santa Fe | Belgrano | Loan |